摘要
随着多核处理器的出现和迅速发展,将以前经典的串行程序并行化,更好地利用多核体系结构提高其性能,成为了当前多核处理器应用研究值得关注的一个问题。以并行化光线跟踪程序PBRT为例,深入研究了串行程序并行化中的并行模型的设计与实现、正确性验证,以及并行化后的性能优化等问题。优化后的并行PBRT取得了4个线程时近3.5倍的加速比,证明了所给出的并行化及性能优化有良好的效果。
With the emergence and rapid development of multi- core, parallding the classic sequential programs and improving their performance on multi -core architecture have become a hot area for research. Basing on the paralldization of a ray tracer named PBRT,introduces some problems and their solutions in the parallelization of PBRT, such as design and implementation of parallel model,validation, and performance.Parallelized and optimized PBRT gets about 3.5 speedup with four threads, which shows the parallelization and performance tuning are effective.
出处
《计算机技术与发展》
2008年第10期5-8,12,共5页
Computer Technology and Development
基金
国家自然科学基金(60573143
60773041)
江苏省高技术研究计划(BG2006001)
国家高科技863项目(2006AA01Z201
2006AA01Z219
2006AA01Z439
2007AA01Z404
2007AA01Z479)
南京市高科技项目(2007软资106
2007软资127)
现代通信国家重点实验室基金(9140C1101010603)
江苏省计算机信息处理技术重点实验室基金(kjs06006)
关键词
多核体系结构
程序并行化
光线跟踪
multi- core architecture
program parallelization
ray tracing